Who invented the QR Code? Born from a game, now powering UPI, Aadhaar and WhatsApp logins

Whether you are paying at a local shop, scanning Aadhaar-linked services, or logging into WhatsApp Web, the QR code (Quick Response code) has become a daily necessity. This black-and-white matrix is more than just a convenience, and it is a secure and fast way to transmit information, which is being used across India’s digital ecosystem from UPI apps to official portals.

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